Evening Bat Nycticeius humeralis (Rafinesque, 1818)    
Kingdom Animalia   >   Phylum Chordata   >   Class Mammalia   >   Order Chiroptera   >   Family Vespertilionidae   >   Genus Nycticeius   

Status:

One of our tree bat species. According to Maryland DNR, "Evening bats may roost in large colonies in buildings, or in smaller colonies under loose bark or within hollow trees... The winter habits of evening bats are relatively unknown. It is thought that they may migrate south during the winter, but some may hibernate in hollow trees or under bark in Maryland."

Description:

Similar to Big Brown Bat, but smaller. Note blunt tragus (ear tips), dark brown fur, and black on wings, ears, and tail.

Evening Bat and Eastern Red Bat call structures and characteristic frequencies overlap. However, characteristic frequencies of Eastern Red Bat call pulses typically vary within a call sequence, while those of evening bats are usually more consistent (B. Neece, pers. comm.).

Relationships:

Insectivorous.

There are 8 records in the project database.

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An Evening Bat in Calvert Co., Maryland (12/1/2017). Photo by Ben Springer. (MBP list)

A juvenile Evening Bat in Arkansas. Photo by David Arbour. (MBP list)


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